The Middle Distance

In order to be PC and responsible, I know I ought to recommend a mouth full of latex. But I can't, I just can't.

I think swallowing is far neater and more efficient myself.

So far the poll is bearing out a trend: almost nobody, in fansmut, ever writes somebody spitting, regardless of what they do themselves!

And you have to take into account that some guys take spitting as an insult....

Crowley & Aziraphale

...would probably both fall into this category.

Draco probably has an heirloom monogrammed handkerchief specifically for the purpose. Harry would swallow, though. Snape would do neither; he'd collect it for ingredients.